2acc0ac542
later. We still need to hunt down snippets used that are not. 1324 modified files... http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
898 lines
22 KiB
C
898 lines
22 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Alan Korr
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "rbunicode.h"
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#include "bidi.h"
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#include "scroll_engine.h"
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#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
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#define LCDFN(fn) lcd_ ## fn
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#define FBFN(fn) fb_ ## fn
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#define LCDM(ma) LCD_ ## ma
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#define LCDNAME "lcd_"
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#define MAIN_LCD
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#endif
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/*** globals ***/
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FBFN(data) LCDFN(framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)]
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#if CONFIG_CPU != SH7034
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IBSS_ATTR
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#endif
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;
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static struct viewport default_vp =
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{
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.x = 0,
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.y = 0,
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.width = LCDM(WIDTH),
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.height = LCDM(HEIGHT),
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.font = FONT_SYSFIXED,
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.drawmode = DRMODE_SOLID,
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};
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static struct viewport* current_vp = &default_vp;
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/*** Viewports ***/
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void LCDFN(set_viewport)(struct viewport* vp)
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{
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if (vp == NULL)
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current_vp = &default_vp;
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else
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current_vp = vp;
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}
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void LCDFN(update_viewport)(void)
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{
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LCDFN(update_rect)(current_vp->x, current_vp->y,
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current_vp->width, current_vp->height);
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}
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void LCDFN(update_viewport_rect)(int x, int y, int width, int height)
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{
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LCDFN(update_rect)(current_vp->x + x, current_vp->y + y, width, height);
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}
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/* LCD init */
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void LCDFN(init)(void)
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{
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LCDFN(clear_display)();
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#ifndef SIMULATOR
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LCDFN(init_device)();
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#endif
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#ifdef MAIN_LCD
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scroll_init();
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#endif
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}
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/*** parameter handling ***/
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void LCDFN(set_drawmode)(int mode)
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{
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current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
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}
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int LCDFN(get_drawmode)(void)
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{
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return current_vp->drawmode;
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}
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int LCDFN(getwidth)(void)
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{
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return current_vp->width;
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}
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int LCDFN(getheight)(void)
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{
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return current_vp->height;
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}
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void LCDFN(setfont)(int newfont)
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{
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current_vp->font = newfont;
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}
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int LCDFN(getfont)(void)
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{
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return current_vp->font;
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}
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int LCDFN(getstringsize)(const unsigned char *str, int *w, int *h)
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{
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return font_getstringsize(str, w, h, current_vp->font);
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}
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/*** low-level drawing functions ***/
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static void setpixel(int x, int y)
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{
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LCDFN(framebuffer)[y>>3][x] |= 1 << (y & 7);
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}
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static void clearpixel(int x, int y)
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{
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LCDFN(framebuffer)[y>>3][x] &= ~(1 << (y & 7));
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}
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static void flippixel(int x, int y)
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{
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LCDFN(framebuffer)[y>>3][x] ^= 1 << (y & 7);
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}
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static void nopixel(int x, int y)
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{
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(void)x;
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(void)y;
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}
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LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs)[8] = {
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flippixel, nopixel, setpixel, setpixel,
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nopixel, clearpixel, nopixel, clearpixel
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};
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static void ICODE_ATTR flipblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address ^= bits & mask;
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}
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static void ICODE_ATTR bgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address &= bits | ~mask;
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}
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static void ICODE_ATTR fgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address |= bits & mask;
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}
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static void ICODE_ATTR solidblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *(char*)address;
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bits ^= data;
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*address = data ^ (bits & mask);
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}
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static void ICODE_ATTR flipinvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address ^= ~bits & mask;
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}
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static void ICODE_ATTR bginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address &= ~(bits & mask);
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}
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static void ICODE_ATTR fginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address |= ~bits & mask;
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}
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static void ICODE_ATTR solidinvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *(char *)address;
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bits = ~bits ^ data;
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*address = data ^ (bits & mask);
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}
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LCDFN(blockfunc_type)* const LCDFN(blockfuncs)[8] = {
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flipblock, bgblock, fgblock, solidblock,
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flipinvblock, bginvblock, fginvblock, solidinvblock
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};
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/*** drawing functions ***/
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/* Clear the whole display */
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void LCDFN(clear_display)(void)
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{
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unsigned bits = (current_vp->drawmode & DRMODE_INVERSEVID) ? 0xFFu : 0;
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memset(LCDFN(framebuffer), bits, sizeof LCDFN(framebuffer));
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LCDFN(scroll_info).lines = 0;
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}
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/* Clear the current viewport */
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void LCDFN(clear_viewport)(void)
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{
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int oldmode;
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if (current_vp == &default_vp)
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{
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LCDFN(clear_display)();
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}
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else
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{
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oldmode = current_vp->drawmode;
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/* Invert the INVERSEVID bit and set basic mode to SOLID */
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current_vp->drawmode = (~current_vp->drawmode & DRMODE_INVERSEVID) |
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DRMODE_SOLID;
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LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
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current_vp->drawmode = oldmode;
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LCDFN(scroll_stop)(current_vp);
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}
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}
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/* Set a single pixel */
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void LCDFN(drawpixel)(int x, int y)
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{
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if (((unsigned)x < (unsigned)current_vp->width) &&
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((unsigned)y < (unsigned)current_vp->height))
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LCDFN(pixelfuncs)[current_vp->drawmode](current_vp->x + x, current_vp->y + y);
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}
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/* Draw a line */
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void LCDFN(drawline)(int x1, int y1, int x2, int y2)
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{
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int numpixels;
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int i;
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int deltax, deltay;
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int d, dinc1, dinc2;
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int x, xinc1, xinc2;
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int y, yinc1, yinc2;
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LCDFN(pixelfunc_type) *pfunc = LCDFN(pixelfuncs)[current_vp->drawmode];
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deltax = abs(x2 - x1);
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if (deltax == 0)
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{
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DEBUGF(LCDNAME "drawline() called for vertical line - optimisation.\n");
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LCDFN(vline)(x1, y1, y2);
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return;
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}
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deltay = abs(y2 - y1);
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if (deltay == 0)
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{
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DEBUGF(LCDNAME "drawline() called for horizontal line - optimisation.\n");
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LCDFN(hline)(x1, x2, y1);
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return;
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}
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xinc2 = 1;
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yinc2 = 1;
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if (deltax >= deltay)
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{
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numpixels = deltax;
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d = 2 * deltay - deltax;
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dinc1 = deltay * 2;
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dinc2 = (deltay - deltax) * 2;
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xinc1 = 1;
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yinc1 = 0;
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}
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else
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{
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numpixels = deltay;
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d = 2 * deltax - deltay;
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dinc1 = deltax * 2;
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dinc2 = (deltax - deltay) * 2;
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xinc1 = 0;
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yinc1 = 1;
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}
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numpixels++; /* include endpoints */
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if (x1 > x2)
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{
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xinc1 = -xinc1;
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xinc2 = -xinc2;
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}
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if (y1 > y2)
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{
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yinc1 = -yinc1;
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yinc2 = -yinc2;
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}
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x = x1;
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y = y1;
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for (i = 0; i < numpixels; i++)
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{
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if (((unsigned)x < (unsigned)current_vp->width)
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&& ((unsigned)y < (unsigned)current_vp->height))
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pfunc(current_vp->x + x, current_vp->y + y);
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if (d < 0)
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{
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d += dinc1;
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x += xinc1;
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y += yinc1;
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}
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else
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{
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d += dinc2;
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x += xinc2;
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y += yinc2;
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}
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}
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}
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/* Draw a horizontal line (optimised) */
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void LCDFN(hline)(int x1, int x2, int y)
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{
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int x, width;
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unsigned char *dst, *dst_end;
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unsigned mask;
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LCDFN(blockfunc_type) *bfunc;
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/* direction flip */
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if (x2 < x1)
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{
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x = x1;
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x1 = x2;
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x2 = x;
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}
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/* nothing to draw? */
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if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width)
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|| (x2 < 0))
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return;
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/* clipping */
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if (x1 < 0)
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x1 = 0;
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if (x2 >= current_vp->width)
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x2 = current_vp->width-1;
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width = x2 - x1 + 1;
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/* adjust to viewport */
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x1 += current_vp->x;
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y += current_vp->y;
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bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
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dst = &LCDFN(framebuffer)[y>>3][x1];
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mask = 1 << (y & 7);
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dst_end = dst + width;
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do
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bfunc(dst++, mask, 0xFFu);
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while (dst < dst_end);
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}
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/* Draw a vertical line (optimised) */
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void LCDFN(vline)(int x, int y1, int y2)
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{
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int ny;
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FBFN(data) *dst;
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unsigned mask, mask_bottom;
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LCDFN(blockfunc_type) *bfunc;
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/* direction flip */
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if (y2 < y1)
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{
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ny = y1;
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y1 = y2;
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y2 = ny;
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}
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/* nothing to draw? */
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if (((unsigned)x >= (unsigned)current_vp->width) || (y1 >= current_vp->height)
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|| (y2 < 0))
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return;
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/* clipping */
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if (y1 < 0)
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y1 = 0;
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if (y2 >= current_vp->height)
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y2 = current_vp->height-1;
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/* adjust for viewport */
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y1 += current_vp->y;
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y2 += current_vp->y;
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x += current_vp->x;
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bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
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dst = &LCDFN(framebuffer)[y1>>3][x];
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ny = y2 - (y1 & ~7);
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mask = 0xFFu << (y1 & 7);
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mask_bottom = 0xFFu >> (~ny & 7);
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for (; ny >= 8; ny -= 8)
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{
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bfunc(dst, mask, 0xFFu);
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dst += LCDM(WIDTH);
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mask = 0xFFu;
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}
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mask &= mask_bottom;
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bfunc(dst, mask, 0xFFu);
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}
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/* Draw a rectangular box */
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void LCDFN(drawrect)(int x, int y, int width, int height)
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{
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if ((width <= 0) || (height <= 0))
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return;
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int x2 = x + width - 1;
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int y2 = y + height - 1;
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LCDFN(vline)(x, y, y2);
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LCDFN(vline)(x2, y, y2);
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LCDFN(hline)(x, x2, y);
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LCDFN(hline)(x, x2, y2);
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}
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/* Fill a rectangular area */
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void LCDFN(fillrect)(int x, int y, int width, int height)
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{
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int ny;
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FBFN(data) *dst, *dst_end;
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unsigned mask, mask_bottom;
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unsigned bits = 0;
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LCDFN(blockfunc_type) *bfunc;
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bool fillopt = false;
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
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|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
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return;
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/* clipping */
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if (x < 0)
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{
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width += x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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y = 0;
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}
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if (x + width > current_vp->width)
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width = current_vp->width - x;
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if (y + height > current_vp->height)
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height = current_vp->height - y;
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/* adjust for viewport */
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x += current_vp->x;
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y += current_vp->y;
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if (current_vp->drawmode & DRMODE_INVERSEVID)
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{
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if (current_vp->drawmode & DRMODE_BG)
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{
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fillopt = true;
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}
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}
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else
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{
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if (current_vp->drawmode & DRMODE_FG)
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{
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fillopt = true;
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bits = 0xFFu;
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}
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}
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bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
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dst = &LCDFN(framebuffer)[y>>3][x];
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ny = height - 1 + (y & 7);
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mask = 0xFFu << (y & 7);
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mask_bottom = 0xFFu >> (~ny & 7);
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for (; ny >= 8; ny -= 8)
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{
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if (fillopt && (mask == 0xFFu))
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memset(dst, bits, width);
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else
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{
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FBFN(data) *dst_row = dst;
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dst_end = dst_row + width;
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do
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bfunc(dst_row++, mask, 0xFFu);
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while (dst_row < dst_end);
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}
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dst += LCDM(WIDTH);
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mask = 0xFFu;
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}
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mask &= mask_bottom;
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if (fillopt && (mask == 0xFFu))
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memset(dst, bits, width);
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else
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{
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dst_end = dst + width;
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do
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bfunc(dst++, mask, 0xFFu);
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while (dst < dst_end);
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}
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}
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/* About Rockbox' internal bitmap format:
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*
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* A bitmap contains one bit for every pixel that defines if that pixel is
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* black (1) or white (0). Bits within a byte are arranged vertically, LSB
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* at top.
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* The bytes are stored in row-major order, with byte 0 being top left,
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* byte 1 2nd from left etc. The first row of bytes defines pixel rows
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* 0..7, the second row defines pixel row 8..15 etc.
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*
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* This is the same as the internal lcd hw format. */
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/* Draw a partial bitmap */
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void ICODE_ATTR LCDFN(bitmap_part)(const unsigned char *src, int src_x,
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int src_y, int stride, int x, int y,
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int width, int height)
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{
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int shift, ny;
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FBFN(data) *dst, *dst_end;
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unsigned mask, mask_bottom;
|
|
LCDFN(blockfunc_type) *bfunc;
|
|
|
|
/* nothing to draw? */
|
|
if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
|
|
|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
if (x + width > current_vp->width)
|
|
width = current_vp->width - x;
|
|
if (y + height > current_vp->height)
|
|
height = current_vp->height - y;
|
|
|
|
/* adjust for viewport */
|
|
x += current_vp->x;
|
|
y += current_vp->y;
|
|
|
|
src += stride * (src_y >> 3) + src_x; /* move starting point */
|
|
src_y &= 7;
|
|
y -= src_y;
|
|
dst = &LCDFN(framebuffer)[y>>3][x];
|
|
shift = y & 7;
|
|
ny = height - 1 + shift + src_y;
|
|
|
|
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
|
|
mask = 0xFFu << (shift + src_y);
|
|
mask_bottom = 0xFFu >> (~ny & 7);
|
|
|
|
if (shift == 0)
|
|
{
|
|
bool copyopt = (current_vp->drawmode == DRMODE_SOLID);
|
|
|
|
for (; ny >= 8; ny -= 8)
|
|
{
|
|
if (copyopt && (mask == 0xFFu))
|
|
memcpy(dst, src, width);
|
|
else
|
|
{
|
|
const unsigned char *src_row = src;
|
|
FBFN(data) *dst_row = dst;
|
|
|
|
dst_end = dst_row + width;
|
|
do
|
|
bfunc(dst_row++, mask, *src_row++);
|
|
while (dst_row < dst_end);
|
|
}
|
|
|
|
src += stride;
|
|
dst += LCDM(WIDTH);
|
|
mask = 0xFFu;
|
|
}
|
|
mask &= mask_bottom;
|
|
|
|
if (copyopt && (mask == 0xFFu))
|
|
memcpy(dst, src, width);
|
|
else
|
|
{
|
|
dst_end = dst + width;
|
|
do
|
|
bfunc(dst++, mask, *src++);
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dst_end = dst + width;
|
|
do
|
|
{
|
|
const unsigned char *src_col = src++;
|
|
FBFN(data) *dst_col = dst++;
|
|
unsigned mask_col = mask;
|
|
unsigned data = 0;
|
|
|
|
for (y = ny; y >= 8; y -= 8)
|
|
{
|
|
data |= *src_col << shift;
|
|
|
|
if (mask_col & 0xFFu)
|
|
{
|
|
bfunc(dst_col, mask_col, data);
|
|
mask_col = 0xFFu;
|
|
}
|
|
else
|
|
mask_col >>= 8;
|
|
|
|
src_col += stride;
|
|
dst_col += LCDM(WIDTH);
|
|
data >>= 8;
|
|
}
|
|
data |= *src_col << shift;
|
|
bfunc(dst_col, mask_col & mask_bottom, data);
|
|
}
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
|
|
/* Draw a full bitmap */
|
|
void LCDFN(bitmap)(const unsigned char *src, int x, int y, int width,
|
|
int height)
|
|
{
|
|
LCDFN(bitmap_part)(src, 0, 0, width, x, y, width, height);
|
|
}
|
|
|
|
/* put a string at a given pixel position, skipping first ofs pixel columns */
|
|
static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str)
|
|
{
|
|
unsigned short ch;
|
|
unsigned short *ucs;
|
|
struct font* pf = font_get(current_vp->font);
|
|
|
|
ucs = bidi_l2v(str, 1);
|
|
|
|
while ((ch = *ucs++) != 0 && x < current_vp->width)
|
|
{
|
|
int width;
|
|
const unsigned char *bits;
|
|
|
|
/* get proportional width and glyph bits */
|
|
width = font_get_width(pf, ch);
|
|
|
|
if (ofs > width)
|
|
{
|
|
ofs -= width;
|
|
continue;
|
|
}
|
|
|
|
bits = font_get_bits(pf, ch);
|
|
|
|
LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x, y, width - ofs,
|
|
pf->height);
|
|
|
|
x += width - ofs;
|
|
ofs = 0;
|
|
}
|
|
}
|
|
/* put a string at a given pixel position */
|
|
void LCDFN(putsxy)(int x, int y, const unsigned char *str)
|
|
{
|
|
LCDFN(putsxyofs)(x, y, 0, str);
|
|
}
|
|
|
|
/*** Line oriented text output ***/
|
|
|
|
/* put a string at a given char position */
|
|
void LCDFN(puts)(int x, int y, const unsigned char *str)
|
|
{
|
|
LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0);
|
|
}
|
|
|
|
void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style)
|
|
{
|
|
LCDFN(puts_style_offset)(x, y, str, style, 0);
|
|
}
|
|
|
|
void LCDFN(puts_offset)(int x, int y, const unsigned char *str, int offset)
|
|
{
|
|
LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, offset);
|
|
}
|
|
|
|
/* put a string at a given char position, style, and pixel position,
|
|
* skipping first offset pixel columns */
|
|
void LCDFN(puts_style_offset)(int x, int y, const unsigned char *str,
|
|
int style, int offset)
|
|
{
|
|
int xpos,ypos,w,h,xrect;
|
|
int lastmode = current_vp->drawmode;
|
|
|
|
/* make sure scrolling is turned off on the line we are updating */
|
|
LCDFN(scroll_stop_line)(current_vp, y);
|
|
|
|
if(!str || !str[0])
|
|
return;
|
|
|
|
LCDFN(getstringsize)(str, &w, &h);
|
|
xpos = x*w / utf8length(str);
|
|
ypos = y*h;
|
|
current_vp->drawmode = (style & STYLE_INVERT) ?
|
|
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
|
|
LCDFN(putsxyofs)(xpos, ypos, offset, str);
|
|
current_vp->drawmode ^= DRMODE_INVERSEVID;
|
|
xrect = xpos + MAX(w - offset, 0);
|
|
LCDFN(fillrect)(xrect, ypos, current_vp->width - xrect, h);
|
|
current_vp->drawmode = lastmode;
|
|
}
|
|
|
|
/*** scrolling ***/
|
|
|
|
void LCDFN(puts_scroll)(int x, int y, const unsigned char *string)
|
|
{
|
|
LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT);
|
|
}
|
|
|
|
void LCDFN(puts_scroll_style)(int x, int y, const unsigned char *string,
|
|
int style)
|
|
{
|
|
LCDFN(puts_scroll_style_offset)(x, y, string, style, 0);
|
|
}
|
|
|
|
void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string,
|
|
int offset)
|
|
{
|
|
LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset);
|
|
}
|
|
|
|
void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string,
|
|
int style, int offset)
|
|
{
|
|
struct scrollinfo* s;
|
|
int w, h;
|
|
|
|
if ((unsigned)y >= (unsigned)current_vp->height)
|
|
return;
|
|
|
|
/* remove any previously scrolling line at the same location */
|
|
LCDFN(scroll_stop_line)(current_vp, y);
|
|
|
|
if (LCDFN(scroll_info.lines) >= LCDM(SCROLLABLE_LINES)) return;
|
|
|
|
s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines];
|
|
|
|
s->start_tick = current_tick + LCDFN(scroll_info).delay;
|
|
s->style = style;
|
|
if (style & STYLE_INVERT) {
|
|
LCDFN(puts_style_offset)(x,y,string,STYLE_INVERT,offset);
|
|
}
|
|
else
|
|
LCDFN(puts_offset)(x,y,string,offset);
|
|
|
|
LCDFN(getstringsize)(string, &w, &h);
|
|
|
|
if (current_vp->width - x * 8 < w) {
|
|
/* prepare scroll line */
|
|
char *end;
|
|
|
|
memset(s->line, 0, sizeof s->line);
|
|
strcpy(s->line, string);
|
|
|
|
/* get width */
|
|
s->width = LCDFN(getstringsize)(s->line, &w, &h);
|
|
|
|
/* scroll bidirectional or forward only depending on the string
|
|
width */
|
|
if ( LCDFN(scroll_info).bidir_limit ) {
|
|
s->bidir = s->width < (current_vp->width) *
|
|
(100 + LCDFN(scroll_info).bidir_limit) / 100;
|
|
}
|
|
else
|
|
s->bidir = false;
|
|
|
|
if (!s->bidir) { /* add spaces if scrolling in the round */
|
|
strcat(s->line, " ");
|
|
/* get new width incl. spaces */
|
|
s->width = LCDFN(getstringsize)(s->line, &w, &h);
|
|
}
|
|
|
|
end = strchr(s->line, '\0');
|
|
strncpy(end, string, current_vp->width/2);
|
|
|
|
s->vp = current_vp;
|
|
s->y = y;
|
|
s->len = utf8length(string);
|
|
s->offset = offset;
|
|
s->startx = x * s->width / s->len;;
|
|
s->backward = false;
|
|
|
|
LCDFN(scroll_info).lines++;
|
|
}
|
|
}
|
|
|
|
void LCDFN(scroll_fn)(void)
|
|
{
|
|
struct font* pf;
|
|
struct scrollinfo* s;
|
|
int index;
|
|
int xpos, ypos;
|
|
int lastmode;
|
|
struct viewport* old_vp = current_vp;
|
|
|
|
for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) {
|
|
s = &LCDFN(scroll_info).scroll[index];
|
|
|
|
/* check pause */
|
|
if (TIME_BEFORE(current_tick, s->start_tick))
|
|
continue;
|
|
|
|
LCDFN(set_viewport)(s->vp);
|
|
|
|
if (s->backward)
|
|
s->offset -= LCDFN(scroll_info).step;
|
|
else
|
|
s->offset += LCDFN(scroll_info).step;
|
|
|
|
pf = font_get(current_vp->font);
|
|
xpos = s->startx;
|
|
ypos = s->y * pf->height;
|
|
|
|
if (s->bidir) { /* scroll bidirectional */
|
|
if (s->offset <= 0) {
|
|
/* at beginning of line */
|
|
s->offset = 0;
|
|
s->backward = false;
|
|
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
|
|
}
|
|
if (s->offset >= s->width - (current_vp->width - xpos)) {
|
|
/* at end of line */
|
|
s->offset = s->width - (current_vp->width - xpos);
|
|
s->backward = true;
|
|
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
|
|
}
|
|
}
|
|
else {
|
|
/* scroll forward the whole time */
|
|
if (s->offset >= s->width)
|
|
s->offset %= s->width;
|
|
}
|
|
|
|
lastmode = current_vp->drawmode;
|
|
current_vp->drawmode = (s->style&STYLE_INVERT) ?
|
|
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
|
|
LCDFN(putsxyofs)(xpos, ypos, s->offset, s->line);
|
|
current_vp->drawmode = lastmode;
|
|
LCDFN(update_viewport_rect)(xpos, ypos, current_vp->width - xpos, pf->height);
|
|
}
|
|
|
|
LCDFN(set_viewport)(old_vp);
|
|
}
|